Lock



H. E..G|LLAND.

-LOCK.

APPLICATION FILED JUNE 7, 1919.

Patented Dec. 28, 1920.

2 SHEETS-SHEET 1- WITNESS:

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H. E. GILLAND.

LOCK.

APPLICATION FILED IUITE 7. 1919.

1 364,048, Patented Dec. 28, 1920.

2 SHEETS-SHEET 2.

IVITNESS: INVEIYTOR. W fly BY fZZZG aZZaJLdI A TTORNE Y.

UNITED STATES ATENT OFFICE.

HOMER E. GILLAND, OF GRAND RAPIDS, MICHIGAN.

LOCK.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed. June 7, 1919. Serial No. 302,426.

principalobject of the invention isto provide a combination lock withmeans for cutting off the carbureter and circuit.

Another object of the invention is to provide means whereby an alarmwill be sounded when an unauthorized person attempts to unlock thedevice.

The invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a front fragmentary view showing the invention placed on the dash ofan automobile;

Fig.u2:is a detailed sectional view of the valve for controlling thefuel supply;

Fig., 3 is a longitudinal sectional -view withthe parts, in unlockedposition;

Fig.v t'is a like view with the parts in locked position;

i Fig. 5 is a plan view with the parts in supply of gasolene to the forbreaking the ignition "locked position and with the cover of the caseremoved;

Fig. 6 is a rear view with the parts in locked position;

Fig. 7 is a section on line 7-7 of Fi 4.

In these views 1 indicates a case which may be connected with the dash'2 of the automobile, said dash being provided with an opening 3 whichregisters with the case and which is covered by the plate l. The saidplate and the front of the casing are provided with suitable openingsfor recelving the keys 5, which are 1n the form of spring plungers, andthe lock ng lever 6. This lever is pivoted intermedlate its ends to thelug 7 projecting upwardly from the bottom of the case and the inner endof said lever is forked and engages a cross pin 8 carried by avertically movable rod 9. This rod passes through an opening in thebottom of the casing and is normally held in its lower position by meansof the spring l0. The upper end of the rod, within the caslng, engages atubular member 11 which is slotted, as at 12, to receive the pin 8. Theupper part of the tubular member 11 is provided with an opening 13 toexpose the upper end of the rod 9 for a purpose to be hereinafterdescribed. This tubular member is also provided with a slot 14: at itsrear part through which projects a pin 15 carried by the rod 9 and thispin engages in an opening in a plate 16 carried by an insulated block 17which is secured to a lower switch blade 18. This blade is pivoted atone end to a contact 19 and has its other end adapted to engage with theopposite contact 20. These contacts are suitably located in the ignitionsystem of the automobile so that when the blade is raised the circuit tothe motor will be broken. The rod 9 has its lower end connected by aflexible member 21 to the stem of a valve 22 which is located in thevalve casing 23 placed in the fuel supply of the motor. The valve 22 isnormally held in inoperative position with the supply line open, by thespring 24.

It will thus be seen that when the rod 9 is in its lower position thefuel line to the motor will be opened and the circuit to the ignitionmeans of themotor will be closed so that the motor may operate. Vi henthe lever 6 is depressed to raise the rod 9 the valve 22 will be raisedto shut off the supply of fuel to the motor and at the same time theblade 18 will be raised to break the circuit of the ingnition means andthus the motor will be unable to operate.

l/Vhen the rod 9 is raised a notch 25 therein will be engaged by a latchmember 26 which is pivoted to a bracket 27 carried by the case andhaving its lower portion secured to the tubular member 11. This latchmeans is of substantially L-shape with one of its arms provided withupwardly extending portions which engage the pivot pin. That part of therod directly above the notch is flattened to make the lower wall of thenotch project beyond this flattened part so that this lower wall willcome in contact with the latch member to rock said member and force itsedge into the notch,

said edge working in the opening 13 in the tubular member 11. In thisway the rod 9 is held in raised position against the tension of thespring 10.

The latch member is released from the rod 9 when the proper keys arepushed inwardly and the means for doing this consists of a plurality ofpush rods 28 slidably mounted in the bracket 27 and plate 29 andnormally held in their outermost positions by the springs 30. These pushrods have their outer ends offset so that they will come op posite theends of the keys 5, to be engaged by said keys when the same are pushedinwardly. Each push rod is provided with a notch 31 for receiving theupper edge of the latch member. These notches 31 are arranged atdifferent points on the push rods so that certain of the keys must bepushed in vardly to place all the notches in alinement and thus permitthe latch member to enter said notches and thus release the rod 9. I Inthis way one must know just which keys to push inwardly to unlock thedevice as otherwise he cannot place the notches in alinement. As soon asthe notches are in alinement the pressure of the spring 10 on the rod 9will cause the latch member to rock on its pivot so that its upper endwill enter the notches in the push rods and its lower edge will leavethe notch in the rod 9. The latch member will remain in engagement withthe notches until the lever 6 is again manipulated to raise the rod toagain rock the latch member and thus cause its upper edge to leave thenotches and permit the push rods which have been moved, to return tonormal position.

I provide a locking plate 32 for preventing the keys from being pushedinwa -dly when the parts are in unlocked position. This plate isslidably mounted in the rear of the front part of the case and isnormally held in its upper position by means of a spring 33. The plateis moved to its lower position by a lever 34 pivoted to the lug 7 andhaving one end engaging a flange on the lower edge of the plate 32 andits other end forked and resting on the pin 8 carried by the rod 9. Thuswhen the lever 6 is actu ated to raise the rod 9 the lever will lowerthe plate 32 so as to permit movement of the keys. in this way a personis prevented from securing the combination by manipulating the keyswhile the device is in inoperative position and this arrangement alsoprevents the latch member or plungers being damaged by said plunger rodsbeing moved while in engagement with the latch member.

I also provide means for sounding an alarm when an unauthorized personshould attempt to manipulate the keys to unlock the device. These meansconsist of a switch blade 35 pivoted to a contact 36 and having its freeend adapted to engage with the con- 'act 37, said contact being locatedin the darm circuit. The blade 35 is pivoted to the blade 18 by the link38 so that when the clade 1 is r ed by the rod 9 to break the ignitioncirci said blade 35 will be moved into losed position and when the blade18 is lowered said blade will also be lowered to break tl "l m circuit.The contact 37 is norm vcted from the alarm circuit rminzzl 35) of thecircuit is connee with a spring blade 40 which has its free end normallyspaced from the contact 37 so that the alarm circuit is not completedwhen the blade 35 is in closed position.

Said blade 40 is placed in such a position that it will be engaged bythe ends of the push rods when the keys are pushed inwardly to theirfull extent. In this way if a person not familiar with the combinationshould attempt to unlock the device by pushing in the keys he wouldforce the ends of the plunger rods against the spring blade and thuscomplete the circuit to the alarm causing the same to sound and thusnotify the authorities that an attempt is being made to steal theautomobile. However, when the proper combination keys are pushed in, theplunger rods operated thereby will release the parts before their endscome in contact with the spring blade so that the switch blade 35 willbe lowered and thus break the alarm circuit before the spring blade ispushed against its contact so that the alarm will not be sounded.

It will be seen that the device can be locked simply depressing thelever 6 and that wnen so locked the fuel supply will be cut and theignition circuit broken and the alarm circuit set. If any of the keysshould be pushed in the alarm circuit will be closed to sound the alarmand it will be impossible to unlock the device unless the propercombination keys are manipulated to place all the notches in alinement.While the device is in locked position any one or all of the keys may bepushed in without unlocking the device as the push rods will have freemovement as the latch member has its up or end below the movement of therods. by pushing in the proper keys the parts will be released so as toclose the ignition circuit and permit the fuel to flow to the motor.

hat I claim is 1. In combination with a fuel supply valve, an ignitioncircuit switch and a pair of alarm switches, a casing, a movable membertherein connected with the valve and switches, an operating lever formoving said member into a position to close the valve and open theignition switch and close one alarm switch, a latch. member for holdingsaid mov' able member in operative position and lock combination meansfor releasing the latch member, said means closing the second alarmswitch if the wrong combination parts are manipulated.

2. In combination with a fuel supply valve, an ignition switch and apair of alarm switches, a casing, a movable member therein connectedwith the valve and switches, an operating lever for moving said memberinto a position to close the valve and open the ignition switch andclose one alarm switch, a latch member for holding said movable memberin operated position, notched push rods for permitting said latch memberto release the movable member, said push rods having extensions forengaging an element of the other alarm switch for closing the same andcolcsbination keys for actuating said push ro 3. A device of the classdescribed comprising a casing, a movable member therein, a fuel supplyvalve connected with said member, an ignition switch connected with saidmember, an operating lever for moving said member into locking positionto close the valve and open the switch, a latch member for holding saidmember in locking position, combination means for releasing said latchmember and means for preventing the movement of said means when theparts are in unlocked position.

In testimony whereof I aifix my signature.

HOMER E. GILLAND.

